Cooling device applied to ABS (Acrylonitrile Butadiene Styrene) resin production

Abstract

The utility model relates to the technical field of chemical production equipment, in particular to a cooling device applied to ABS (Acrylonitrile Butadiene Styrene) resin production. The top of the shell is provided with a material inlet, and the bottom of the shell is provided with a material outlet; a cooling medium inlet is formed in the upper part of the side wall, and a cooling medium outlet is formed in the lower part of the side wall; the shape of each material pipeline is of a multi-layer spiral pipeline structure; the inlet ends are fixedly communicated with the material inlet through the material distributor, and the outlet ends are fixedly communicated with the material outlet through the material collecting bin body; a plurality of stirring blade assemblies are uniformly arranged on each material pipeline at intervals; the at least three baffle plates are uniformly arranged on the inner wall of the shell at intervals; the retention time of a cooling medium in the shell is prolonged, so that the cooling medium can fully absorb material heat, and compared with a traditional device, the cooling medium can be greatly shortened, so that the production efficiency of ABS resin is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of chemical production equipment technology, specifically to a cooling device used in ABS resin production. Background Technology

[0002] As a widely used thermoplastic engineering plastic, the cooling process after the polymerization reaction of ABS resin is crucial in its production. Appropriate cooling ensures the stability of the product's molecular structure, thereby guaranteeing product quality.

[0003] The existing cooling devices used in ABS resin production have the following technical problems:

[0004] First, traditional cooling devices mostly use simple jacketed cooling structures, where heat exchange between the cooling medium and the material relies solely on a limited contact area. This results in slow heat transfer and long cooling times, severely impacting production efficiency. For example, on some large ABS production lines, the long cooling time significantly restricts daily output.

[0005] Secondly, when materials flow within the reactor or pipeline, the cooling rates near the cooling walls and in the central area differ, easily leading to temperature stratification. This results in inconsistent internal properties of the product, making it prone to quality defects during subsequent processing, such as significant differences in tensile strength and toughness across different parts of the product.

[0006] Thirdly, to achieve cooling, existing cooling devices often require a continuous and large-scale supply of cooling medium, consuming a significant amount of energy. This not only increases production costs but also contradicts the industrial development trend of energy conservation and emission reduction. Taking a medium-sized ABS production enterprise as an example, the energy consumption of the cooling process accounts for 20%-30% of the total production energy consumption. Therefore, to solve the above-mentioned technical problems, this application proposes a cooling device for ABS resin production. Utility Model Content

[0007] This utility model provides a cooling device for ABS resin production. Its purpose is to solve the technical problems of low heat exchange efficiency, poor temperature uniformity and high energy consumption in the existing cooling devices for ABS resin production by optimizing the structure and working method, thereby improving the overall quality and efficiency of ABS resin production.

[0008] To achieve the above objectives, the technical solution of this utility model is as follows:

[0009] This utility model provides a cooling device for ABS resin production, comprising:

[0010] The shell has a material inlet at the top and a material outlet at the bottom; a cooling medium inlet is located on the upper part of its side wall and a cooling medium outlet is located on the lower part of its side wall.

[0011] Several material pipelines, each with a multi-layered spiral pipe structure; the inlet end of each pipeline is fixedly connected to the material inlet via a material distributor, and the outlet end of each pipeline is fixedly connected to the material outlet via a material collection bin; each material pipeline is evenly spaced with several stirring blade assemblies.

[0012] At least three baffles are evenly spaced on the inner wall of the housing.

[0013] Furthermore, an inspection hole is provided in the lower middle part of the side wall of the housing.

[0014] Furthermore, the material distributor and the material collection bin have symmetrical and identical structures. The top of the material distributor is connected to the material inlet, and the bottom of the material distributor is uniformly provided with a number of openings, each of which corresponds to a material pipeline.

[0015] Furthermore, the number of material pipelines is four.

[0016] Furthermore, the baffle plate has a semi-circular structure and is provided with several slots.

[0017] Furthermore, the number of baffles is four.

[0018] Furthermore, each of the aforementioned material pipelines has three stirring blade assemblies.

[0019] Furthermore, the stirring blade assembly includes a mounting tube, a plurality of ball bearings, an inner ring, and stirring blades. The mounting tube is fixed to the material pipeline. An annular groove is provided on the inner wall of the mounting tube, and the inner ring is embedded in the annular groove. The plurality of ball bearings are disposed between the inner ring and the bottom of the annular groove, and the inner ring is rotatable. The tip of each blade of the stirring blade is fixed on the inner wall of the inner ring.

[0020] Furthermore, sliding sealing rings are provided on both the upper and lower sides of the inner ring.

[0021] Furthermore, the material distributor is equipped with a temperature measuring component I, and the material collection chamber is equipped with a temperature measuring component II.

[0022] The beneficial effects achieved by this utility model are as follows:

[0023] This application employs a technical solution that incorporates multiple spiral material pipelines and several baffles spaced apart inside the casing of the device. The multi-layer spiral material pipeline structure significantly increases the contact area between the material and the cooling medium, while the baffles guide the cooling medium to flow in an S-shape, extending the residence time of the cooling medium inside the casing and allowing it to fully absorb heat from the material. Thus, through the synergistic effect of the multi-layer spiral material pipelines and baffles, the heat exchange efficiency between the material and the cooling medium is greatly improved, and the cooling time of the material can be significantly shortened compared to traditional devices, thereby effectively improving the production efficiency of ABS resin.

[0024] This application employs a technical solution involving a porous material distributor installed at the material inlet of the device and several agitator blade assemblies spaced at intervals along the material pipeline. The porous material distributor evenly disperses the material into the multi-layered spiral material pipeline, ensuring consistent material flow rate and velocity. This avoids uneven cooling caused by localized material accumulation or excessively high flow rates. The agitator blade assemblies rotate with the material flow, thus agitating the material and facilitating rapid heat transfer, reducing temperature gradients, and ensuring uniform overall cooling. Therefore, the combined effect of the material distributor and agitator significantly improves temperature uniformity during cooling, enhances the consistency of internal product performance, and consequently significantly reduces the product defect rate.

[0025] This application can further connect a waste heat recovery device at the outlet of the cooling medium to recover the heat absorbed by the cooling medium during the cooling process and use it to preheat the raw materials that are about to enter the reaction stage, thereby realizing the cascade utilization of energy and reducing the overall energy consumption of the device. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0027] Figure 1 This is a frontal sectional view of the structure of this application;

[0028] Figure 2 This is a front view structural diagram of this application;

[0029] Figure 3 This application Figure 1 Enlarged view of part A in the image;

[0030] Figure 4 This is a top sectional view of the baffle plate of this application;

[0031] Figure 5 This is a top sectional view of the material distributor of this application;

[0032] Figure 6 This is a cross-sectional schematic diagram of the stirring blade assembly.

[0033] In the diagram, 1. Shell; 2. Material inlet; 3. Material outlet; 4. Cooling medium inlet; 5. Cooling medium outlet; 6. Material pipeline; 7. Material distributor; 8. Material collection bin; 9. Baffle plate; 10. Agitator blade assembly; 10-1. Mounting pipe; 10-2. Inner ring; 10-3. Ball bearing; 10-4. Agitator blade; 10-5. Sliding seal ring; 11. Temperature measuring component I; 12. Temperature measuring component II; 13. Inspection hole. Detailed Implementation

[0034] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0035] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0036] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, if the word "and / or" appears throughout the text, it means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0037] like Figures 1-6As shown, this utility model provides a cooling device for ABS resin production, including a shell 1, which is a cylindrical structure; a material inlet 2 is provided at the top of the shell 1, which is fixedly connected to a material feeding pipeline; a material outlet 3 is provided at the bottom of the shell 1, which is fixedly connected to a material discharging pipeline; a cooling medium inlet 4 is provided on the upper part of the side wall of the shell 1, which is fixedly connected to a cooling medium liquid inlet pipeline; and a cooling medium outlet 5 is provided on the lower part of the side wall of the shell 1, which is fixedly connected to a cooling medium liquid outlet pipeline.

[0038] The interior of the housing 1 is equipped with several multi-layered spiral material pipelines 6, each resembling a spring in shape. The inlet ends of each material pipeline 6 are fixedly connected to a material inlet 2 via a material distributor 7, and the outlet ends of each material pipeline 6 are fixedly connected to a material outlet 3 via a material collection chamber 8. A cooling medium flow channel is formed between the outer wall of the material pipelines 6 and the inner wall of the housing 1. This design allows material to pass through the interior of the material pipelines 6, while the cooling medium flows around the exterior of the material pipelines 6. The multi-layered spiral structure of the material pipelines 6 significantly increases the contact area between the material and the cooling medium.

[0039] Furthermore, the material distributor 7 and the material collection chamber 8 have symmetrical and identical structures. The material distributor 7 is located at the top of the inner cavity of the housing 1, and the material collection chamber 8 is located at the bottom of the inner cavity of the housing 1. The material distributor 7, the material collection chamber 8, and the inner wall of the housing 1 form a sealed cavity. Both the material distributor 7 and the material collection chamber 8 are hollow cylindrical structures. The top of the material distributor 7 is connected to the material inlet 2, and the bottom of the material distributor 7 is uniformly provided with several openings, each corresponding to a material pipeline 6. After the material enters the material distributor 7 from the material inlet 2, it is evenly distributed and enters the corresponding material pipeline 6 through each opening. The structure of the material collection chamber 8 and its connection with the material pipeline 6 are similar to those of the material distributor 7, and therefore will not be described in detail.

[0040] Furthermore, the number of openings in the material distributor 7 is equal to the number of material pipelines 6, and the number of material pipelines 6 is 4.

[0041] At least three baffles 9 are evenly spaced from top to bottom inside the housing 1. The baffles 9 have a semi-circular structure and several slots to avoid the material pipeline 6. This design guides the cooling medium to flow in an S-shape, prolonging the residence time of the cooling medium inside the housing 1, allowing the cooling medium to fully absorb the heat from the material and further improving the heat exchange efficiency.

[0042] Furthermore, the number of the baffles 9 is four.

[0043] Each of the material pipelines 6 is evenly spaced with several stirring blade assemblies 10. With this design, as the material flows from the inside of the material pipeline 6, the blades are driven to rotate, thereby stirring the material, enabling rapid heat transfer within the material, reducing the temperature gradient, and ensuring uniform cooling of the material as a whole.

[0044] Furthermore, each of the material pipelines 6 has three stirring blade assemblies 10.

[0045] Furthermore, the stirring blade assembly 10 includes a mounting pipe 10-1, a plurality of ball bearings 10-3, an inner ring 10-2, and stirring blades 10-4. The inner diameter of the mounting pipe 10-1 is the same as the inner diameter of the material pipeline 6. The mounting pipe 10-1 is fixed to the material pipeline 6 by welding or flange. An annular groove is provided on the inner wall of the mounting pipe 10-1, and the inner ring 10-2 is embedded in the annular groove. The plurality of ball bearings 10-3 are all disposed between the inner ring 10-2 and the annular groove. Between the bottom, the inner ring 10-2, the ball bearing 10-3, and the annular groove form a bearing structure. The inner ring 10-2 can rotate about the axis of the material pipeline 6. The tip of each blade of the stirring blade 10-4 is fixed on the inner wall of the inner ring 10-2, and the stirring blade 10-4 can rotate with the inner ring 10-2. When the material flows in the material pipeline 6 and passes through the stirring blade 10-4, the stirring blade 10-4 rotates under the push of the material, thereby stirring the material evenly.

[0046] Furthermore, the mounting tube 10-1, ball bearing 10-3, inner ring 10-2, and stirring blade 10-4 are all made of corrosion-resistant materials, such as stainless steel and ceramics, to cope with chemically corrosive or abrasive materials.

[0047] Furthermore, sliding sealing rings 10-5 are provided on both the upper and lower sides of the inner ring 10-2. The sliding sealing rings 10-5 are used to seal the gap between the inner ring 10-2 and the annular groove to prevent materials from entering the annular groove.

[0048] Furthermore, an inspection hole 13 is provided in the lower middle part of the side wall of the housing 1, which is used by personnel to enter the interior of the housing 1 of the device for maintenance work.

[0049] Furthermore, the material distributor 7 is equipped with a temperature measuring component I11, and the material collection chamber 8 is equipped with a temperature measuring component II12. The temperature measuring components I11 and II12 are used to monitor the material temperature in real time and transmit the data to the intelligent controller (not shown in the figure). Both the temperature measuring components I11 and II12 are temperature sensors. The intelligent controller includes a PLC controller, which controls the flow regulating valve built into the cooling medium inlet pipeline based on the monitoring data of the temperature measuring components I11 and II12. The implementation of this control function is relatively easy for those skilled in the art, and the specific details will not be elaborated here.

[0050] Specifically, the working principle of this application is as follows:

[0051] In the ABS resin production process, after the polymerization reaction is completed, the material is transported to the material distributor 7 through the material feed pipeline. After being evenly distributed by the material distributor 7, the material enters the multi-layer spiral material pipelines 6. Further cooling medium enters from the cooling medium inlet 4. Guided by the baffle 9, the cooling medium flows in an S-shape around the multi-layer spiral material pipelines 6 and exchanges heat with the material inside the pipelines 6. As the material flows within the pipelines 6, it drives the stirring blades of the stirring blade assembly 10 to rotate, stirring the material and promoting the uniform transfer of heat within it. Temperature measuring components I 11 and II 12 monitor the material temperature in real time and transmit the data to the intelligent controller. The controller automatically adjusts the flow regulating valve of the cooling medium according to the preset temperature range, controlling the flow rate and temperature of the cooling medium. After absorbing heat from the material, the cooling medium flows out from the cooling medium outlet 5 and enters the waste heat recovery device. The recovered heat can then be used to preheat the raw materials that are about to enter the reaction stage.

[0052] The above description is only an optional embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A cooling device applied to ABS resin production, characterized by, The utility model relates to a kind of cooling device for material, including: Shell (1), top is provided with material inlet (2), bottom is provided with material outlet (3); Its side wall upper portion is provided with cooling medium inlet (4), and side wall lower portion is provided with cooling medium outlet (5); Several material pipelines (6) are in the shape of multilayer spiral pipe structure;Inlet end is fixedly connected with material inlet (2) by material distributor (7), and outlet end is fixedly connected with material outlet (3) by material collection bin (8);Each of the material pipeline (6) is uniformly provided with several stirring blade assemblies (10) on each of the material pipeline (6). At least three baffles (9) are uniformly arranged on the inner wall of the shell (1).

2. The cooling device for ABS resin production according to claim 1, characterized in that: The lower middle part of the side wall of the shell (1) is provided with an access hole (13).

3. The cooling device for ABS resin production according to claim 1, characterized in that: The material distributor (7) and the material collection bin (8) are symmetrically structured; the top of the material distributor (7) is connected with the material inlet (2), and the bottom of the material distributor (7) is uniformly provided with a plurality of openings, which correspond one-to-one with the material pipelines (6).

4. The cooling device for ABS resin production according to claim 1 or 3, characterized in that: The number of the material pipelines (6) is four.

5. The cooling device for ABS resin production according to claim 1, characterized in that: The baffle (9) is a semicircular structure, and a plurality of slots are provided on the baffle (9).

6. The cooling device for ABS resin production according to claim 1 or 5, characterized in that: The number of the baffle (9) is four.

7. The cooling device for ABS resin production according to claim 1, characterized in that: The number of the stirring blade assembly (10) on each of the material pipelines (6) is three.

8. The cooling device for ABS resin production according to claim 1, characterized in that: The stirring blade assembly (10) includes a mounting pipe (10-1), an inner ring (10-2), a plurality of balls (10-3) and a stirring paddle (10-4), the mounting pipe (10-1) is fixed on the material pipeline (6); an annular groove is provided on the inner wall of the mounting pipe (10-1), the inner ring (10-2) is embedded in the annular groove, a plurality of balls (10-3) are arranged between the inner ring (10-2) and the bottom of the annular groove, and the inner ring (10-2) is rotatable; each blade tip of the stirring paddle (10-4) is fixed on the inner wall of the inner ring (10-2).

9. The cooling device for ABS resin production according to claim 8, characterized in that: The upper and lower sides of the inner ring (10-2) are provided with sliding sealing rings (10-5).

10. The cooling device for ABS resin production according to claim 1, characterized in that: The inside of the material distributor (7) is provided with a temperature measuring component I (11), and the inside of the material collection bin (8) is provided with a temperature measuring component II (12).

Images